Got the XPS 15 a month ago and the first time I plugged my headphones I noticed the problem
The right speaker has significantly lower sound than the left and when I wiggle the audio jack of the headphones, it gets normal for a moment and then bad again. That happens only with headphones. I tried 4 different ones.
I reinstalled audio drivers - no luck. It seems like loose audio jack connection and not a software issue.
Any one having the same problem?
I guess the only solution would be sending it back for repair which I don't want